Two coherent sources and are separated by a distance four times the wavelength of the source. The sources lies along axis whereas a detector moves along axis. Leaving the origin and far off points the number of points where maxima are observed is

Two coherent sources and are separated by a distance four times the wavelength of the source. The sources lies along axis whereas a detector moves along axis. Leaving the origin and far off points the number of points where maxima are observed is

1 Answer

127 votes

From ,

Here is the path difference for maximum intensity

Or

Then

Number of points for maxima becomes 3

127 votes

127